Pipe inspection system

Abstract

A pipe inspection system which tests for compressed air leaks in a section to be inspected in a pipe has a first branch pipe and a second branch pipe. The first branch pipe branches from the pipe upstream of the section to be inspected, and joins the pipe, upstream of the section to be inspected. The second branch pipe branches from the pipe downstream of the section to be inspected. The first branch pipe has a fluorescent solvent supply unit provided therein that supplies a fluorescent solvent to the section to be inspected. The second branch pipe has a fluorescent solvent recovery unit provided therein that recovers fluorescent solvent from the section to be inspected.

1 . A pipe inspection system arranged upstream from a pneumatic equipment in a direction in which compressed air flows in order to inspect whether there is a compressed air leakage location at an inspection target portion of a pipe that supplies the compressed air to the pneumatic equipment, the pipe inspection system comprising:
 a first branch pipe that branches from the pipe at a location upstream from the inspection target portion and merges into the pipe:   a fluorescent solvent supply portion that is provided for the first branch pipe and supplies a fluorescent solvent to the inspection target portion:   a second branch pipe that branches from the pipe at a location downstream from the inspection target portion: and   a fluorescent solvent collection portion that is provided for the second branch pipe and collects the fluorescent solvent from the inspection target portion. wherein the second branch pipe and the fluorescent solvent collection portion are arranged upstream from the pneumatic equipment.   
     
     
         2 . The pipe inspection system according to  claim 1 , wherein the fluorescent solvent supply portion includes a mist generator that turns the fluorescent solvent to mist, and supplies the mist of the fluorescent solvent to the inspection target portion. 
     
     
         3 . The pipe inspection system according to  claim 1 , wherein the fluorescent solvent is an aqueous solution or an aqueous emulsion of fluorescent agent. 
     
     
         4 . The pipe inspection system according to  claim 1 , further comprising:
 a first valve that is provided for the pipe between a point where the first branch pipe branches and a point where the first branch pipe merges;   a second valve that is provided upstream of the fluorescent solvent supply portion in the first branch pipe;   a third valve that is provided in the pipe downstream of a point where the second branch pipe branches; and   a fourth valve that is provided upstream of the fluorescent solvent collection portion in the second branch pipe.   
     
     
         5 . The pipe inspection system according to  claim 1 , further comprising a discharge portion that is provided downstream of the fluorescent solvent collection portion in the second branch pipe and is open to the atmosphere. 
     
     
         6 . The pipe inspection system according to  claim 1 , further comprising a black light that irradiates the inspection target portion with ultraviolet light.